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12323131002 = 2327137523279
BaseRepresentation
bin10110111101000010…
…00000111001111010
31011210211010220202100
423132201000321322
5200214210143002
65354451244230
7614243612430
oct133641007172
934724126670
1012323131002
1152540a4796
12247aba9676
1312150a0bc0
1484c8d2d50
154c1ced11c
hex2de840e7a

12323131002 has 48 divisors (see below), whose sum is σ = 32861687040. Its totient is φ = 3250056096.

The previous prime is 12323130997. The next prime is 12323131033. The reversal of 12323131002 is 20013132321.

12323131002 is a `hidden beast` number, since 123 + 231 + 310 + 0 + 2 = 666.

12323131002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3760002 + ... + 3763277.

It is an arithmetic number, because the mean of its divisors is an integer number (684618480).

Almost surely, 212323131002 is an apocalyptic number.

12323131002 is an abundant number, since it is smaller than the sum of its proper divisors (20538556038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12323131002 is a wasteful number, since it uses less digits than its factorization.

12323131002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7523307 (or 7523304 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12323131002 its reverse (20013132321), we get a palindrome (32336263323).

The spelling of 12323131002 in words is "twelve billion, three hundred twenty-three million, one hundred thirty-one thousand, two".

Divisors: 1 2 3 6 7 9 13 14 18 21 26 39 42 63 78 91 117 126 182 234 273 546 819 1638 7523279 15046558 22569837 45139674 52662953 67709511 97802627 105325906 135419022 157988859 195605254 293407881 315977718 473966577 586815762 684618389 880223643 947933154 1369236778 1760447286 2053855167 4107710334 6161565501 12323131002